CN111009709B - Band-stop filter and combiner - Google Patents
Band-stop filter and combiner Download PDFInfo
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- CN111009709B CN111009709B CN201911357202.0A CN201911357202A CN111009709B CN 111009709 B CN111009709 B CN 111009709B CN 201911357202 A CN201911357202 A CN 201911357202A CN 111009709 B CN111009709 B CN 111009709B
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- 230000008878 coupling Effects 0.000 claims abstract description 91
- 238000010168 coupling process Methods 0.000 claims abstract description 91
- 238000005859 coupling reaction Methods 0.000 claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000000465 moulding Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910000679 solder Inorganic materials 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 12
- 238000003466 welding Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
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Abstract
The invention relates to a band-stop filter and a combiner. The coupling feed piece includes main feed piece, a plurality of first connecting piece and a plurality of first coupling feed board. The other end of the first connecting piece is correspondingly connected with the first coupling feed plate, and the other end of the first connecting piece stretches into the first resonant cavity through the notch. The first coupling feed plate is arranged at intervals with the first resonant column. The main feed piece, the first connecting piece and the first coupling feed plate are of an integrated structure. The coupling feed piece is isolated from the metal layer through the insulating support piece, and the cover plate is covered on the metal cavity. Because main feed piece, first connecting piece and first coupling feed board are integrated structure, need not to adopt like traditional with main feed piece, first connecting piece, first coupling feed board three carry out welded connection's mode promptly to can reduce solder joint quantity, simplify the structure, the low cost, the assembly is simple, production efficiency is higher.
Description
Technical Field
The present invention relates to the field of filter technologies, and in particular, to a band-stop filter and a combiner.
Background
In order to pursue resource sharing, the system has low cost, small device size and light weight, and a mode that a plurality of systems and a plurality of frequency bands share one antenna feed system is widely applied. Improvements in multi-system, multi-band splitting and combining techniques have also become an important part of the development of communication technologies. In the traditional combiner with the band elimination filter, a plurality of coupling branches are welded and connected to a main passage feeder line for connecting an input end connector and an output end connector, when the coupling branches are more, more welding spots or screws are contained, the assembly process is complex, and the requirements of low cost and low intermodulation of products are difficult to meet.
Disclosure of Invention
Based on this, it is necessary to overcome the defects of the prior art, and to provide a band stop filter and a combiner, which can reduce the number of welding spots, simplify the structure, reduce the cost, simplify the assembly, and have higher production efficiency.
The technical scheme is as follows: a band reject filter comprising: the metal cavity is provided with a wiring cavity and a plurality of first resonant cavities arranged along the wiring cavity on one surface of the metal cavity, a notch communicated with the wiring cavity is formed in the cavity wall of each first resonant cavity, and a first resonant column is arranged in each first resonant cavity; the coupling feed piece, the coupling feed piece includes main feed piece, a plurality of first connecting piece and a plurality of first coupling feed board, first coupling feed board with first resonant cavity one-to-one sets up, main feed piece set up in walk the line intracavity, main feed piece with the one end of first connecting piece links to each other, the other end of first connecting piece with first coupling feed board corresponds to link to each other, the other end of first connecting piece passes through the breach stretches into in the first resonant cavity, first coupling feed board with first resonant column interval sets up, main feed piece first connecting piece with first coupling feed board is integrated structure.
The band elimination filter has the advantages that the main feed piece, the first connecting piece and the first coupling feed plate are of an integrated structure, namely, the mode of welding connection of the main feed piece, the first connecting piece and the first coupling feed plate in the prior art is not needed, so that the number of welding spots can be reduced, the structure is simplified, the cost is low, the assembly is simple, and the production efficiency is high.
In one embodiment, the band-stop filter further includes an insulating support and a cover plate, the coupling feed is isolated from the metal cavity by the insulating support, and the cover plate is covered on the metal cavity.
In one embodiment, the coupling feeding member is formed by forging, stamping, or bending a metal plate.
In one embodiment, the main feeding element and the first connecting element are both sheet-shaped.
In one embodiment, the thicknesses of the main feeding member, the first connecting member and the first coupling feeding plate are the same.
In one embodiment, the main feeding member and the first connecting member are parallel to the bottom wall of the wiring cavity, the first coupling feeding plate is perpendicular to the first connecting member, and a coupling gap is formed between the first coupling feeding plate and the side wall of the first resonant column.
In one embodiment, the number of the insulating supports is more than two, and more than two insulating supports are arranged at intervals along the main feed.
In one embodiment, the main feeding member is provided with a mounting hole, the insulating support member passes through the mounting hole and is fixedly connected with the main feeding member, and two ends of the insulating support member respectively collide with the bottom wall of the wiring cavity and the cover plate.
In one embodiment, the insulating support member includes a first support column and a second support column, a bottom end surface of the first support column is in contact with a bottom wall of the wiring cavity, an inserting column is arranged on a top end surface of the first support column, a jack corresponding to the inserting column is arranged on a bottom end surface of the second support column, a top end surface of the second support column is in contact with the cover plate, the inserting column penetrates through the mounting hole to be inserted into the jack, and the main feed member is clamped and fixed between the top end surface of the first support column and the bottom end surface of the second support column.
In one embodiment, the first resonant cavities are alternately arranged on two sides of the wiring cavity along the wiring cavity, and the first connecting pieces are alternately arranged on two sides of the main feeding piece along the main feeding piece.
The combiner comprises the band-stop filter, wherein one surface of the metal cavity is also provided with a plurality of second resonant cavities, second resonant columns are arranged in the second resonant cavities, the second resonant cavities and the second resonant columns form a band-pass filter, and the second resonant columns in the second resonant cavities close to the signal output end of the main feed piece are mutually coupled with the signal output end of the main feed piece.
The combiner has the technical effect that the band-stop filter brings, and the beneficial effect comprises the beneficial effect of the band-stop filter. In addition, the band-pass filter formed by the second resonant cavities and the second resonant columns can realize the coupling transmission of narrowband signals to the main feed piece, so that the main feed piece can realize the outward transmission of broadband signals of the band-stop filter on one hand and realize the outward transmission of narrowband signals of the band-pass filter on the other hand, namely, realize the function of combining and transmitting signals of the combiner.
In one embodiment, the coupling feeding member further comprises a second connecting member and a second coupling feeding plate, one end of the second connecting member is connected with the main feeding member, and the other end of the second connecting member is connected with the second coupling feeding plate; the cavity wall of the second resonant cavity close to the signal output end of the main feed piece is provided with an opening, the second connecting piece penetrates through the opening and stretches into the second resonant cavity, and the second coupling feed plate and the second resonant column are arranged at intervals.
In one embodiment, the main feeding member, the first connecting member, the first coupling feeding plate, the second connecting member, and the second coupling feeding plate are an integrated structure.
Drawings
Fig. 1 is a schematic structural diagram of a combiner according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a coupling feed of a combiner according to an embodiment of the invention;
FIG. 3 is an exploded view of an insulating support of a combiner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a coupling feeder of a combiner according to an embodiment of the present invention when the coupling feeder is matched with an insulating support.
Reference numerals:
10. a metal cavity; 11. a wiring cavity; 12. a first resonant cavity; 121. a notch; 13. a first resonant column; 14. a second resonant cavity; 141. a coupling window; 15. a second resonant column; 20. a coupling feed; 21. a main feed; 211. a mounting hole; 22. a first connector; 23. a first coupling feed plate; 24. a second connector; 25. a second coupling feed plate; 30. a metal layer; 40. an insulating support; 41. a first support column; 411. inserting a column; 42. a second support column; 421. a jack; 50. a cover plate; 60. a first input terminal connector; 70. an output terminal joint; 80. and a second input terminal connector.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present invention, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
In one embodiment, referring to fig. 1 and 2, a band-stop filter includes a metal cavity 10, a coupling feed 20, a metal layer 30, an insulating support 40, and a cover 50. A wiring cavity 11 and a plurality of first resonant cavities 12 arranged along the wiring cavity 11 are arranged on one surface of the metal cavity 10. The wall of the first resonant cavity 12 is provided with a notch 121 communicated with the wiring cavity 11, and the first resonant cavity 12 is internally provided with a first resonant column 13. The coupling feed 20 includes a main feed 21, a plurality of first connectors 22, and a plurality of first coupling feed plates 23. The first coupling feed plates 23 are disposed in one-to-one correspondence with the first resonant cavities 12. The main feeding element 21 is disposed in the wiring cavity 11, and the main feeding element 21 is connected to one end of the first connecting element 22. The other end of the first connecting piece 22 is correspondingly connected with the first coupling feeding plate 23, and the other end of the first connecting piece 22 extends into the first resonant cavity 12 through the notch 121. The first coupling feed plate 23 is spaced apart from the first resonant tank 13. The main feeding element 21, the first connecting element 22 and the first coupling feeding plate 23 are integrated. Further, the coupling feed 20 is isolated from the metal layer 30 by the insulating support 40, and the cover plate 50 is disposed on the metal cavity 10.
According to the band elimination filter, the main power supply piece 21, the first connecting piece 22 and the first coupling power supply plate 23 are of an integrated structure, namely, a traditional mode of welding and connecting the main power supply piece 21, the first connecting piece 22 and the first coupling power supply plate 23 is not needed, so that the number of welding spots can be reduced, the structure is simplified, the cost is low, the assembly is simple, and the production efficiency is high.
In one embodiment, referring to fig. 1 and 2, the coupling feeding member 20 is formed by forging, stamping, or bending a metal plate. Therefore, the processing and manufacturing are more convenient, no welding spot exists, and the production efficiency is higher.
Further, referring to fig. 1 and 2, the main feeding element 21 and the first connecting element 22 are both sheet-shaped. In this way, for example, the plate-shaped metal member is sheared and bent, so that the coupling feeding member 20 can be obtained conveniently and rapidly, and the production efficiency is high. Further, the thicknesses of the main feeding member 21, the first connecting member 22, and the first coupling feeding plate 23 are the same. Of course, the thicknesses of the main feeding member 21, the first connecting member 22, and the first coupling feeding plate 23 may be different from each other, and will not be described in detail herein.
In one embodiment, referring to fig. 1 and 2, the main feeding element 21 and the first connecting element 22 are parallel to the bottom wall of the routing cavity 11, the first coupling feeding plate 23 is perpendicular to the first connecting element 22, and a coupling gap is formed between the first coupling feeding plate 23 and the side wall of the first resonant pillar 13.
In one embodiment, the number of the insulating supports 40 is two or more, and the two or more insulating supports 40 are spaced along the main feeding member 21. Thus, the coupling feeding member 20 can be stably disposed in the wiring cavity 11 by using more than two insulating supporting members 40, and the coupling feeding member 20 can be prevented from electrically contacting the metal layer 30.
In one embodiment, referring to fig. 1 to 4, the main feeding member 21 is provided with a mounting hole 211, the insulating support member 40 is fixedly connected to the main feeding member 21 through the mounting hole 211, and two ends of the insulating support member 40 respectively abut against the bottom wall of the routing cavity 11 and the cover plate 50.
Further, referring to fig. 3 and 4, the insulating support 40 includes a first support column 41 and a second support column 42. The bottom surface of the first support column 41 is in contact with the bottom wall of the wiring cavity 11, and the top surface of the first support column 41 is provided with a plug 411. The bottom surface of the second support column 42 is provided with a jack 421 corresponding to the plug 411, and the top surface of the second support column 42 abuts against the cover plate 50. The plug 411 is inserted into the insertion hole 421 through the mounting hole 211, and the main feeding member 21 is clamped and fixed between the top end surface of the first support column 41 and the bottom end surface of the second support column 42. In this way, on the one hand, the coupling feeding member 20 can be fixedly installed in the wiring cavity 11 through the insulating supporting member 40, and on the other hand, after the inserting column 411 of the first supporting column 41 passes through the mounting hole 211 and the inserting hole 421 to be connected with the second supporting column 42, the coupling feeding member 20 can be fixedly installed in the wiring cavity 11, and the operation is more convenient.
Further, referring to fig. 3 and 4, the plug 411 is fastened in the jack 421, or is screwed into the jack 421, so as to realize the combined fixation between the insulating support 40 and the main feeding member 21.
It is to be understood that the insulating support 40 may be a cylindrical support, a cubic support, or a prismatic support, which is not limited herein.
As an alternative, the insulating support 40 may be disposed on a sidewall of the wiring cavity 11, for example, may be fixedly disposed on a sidewall of the wiring cavity 11 by bonding, may be fixedly disposed on a sidewall of the wiring cavity 11 by screwing, may be fixedly disposed on a sidewall of the wiring cavity 11 by clamping, and the like. The main power feeding element 21 may be fixed to the insulating support 40 by a snap-fit method, or fixed to the insulating support 40 by an adhesive method, or the like.
In one embodiment, referring to fig. 1 and 2 again, the first resonant cavities 12 are alternately arranged along the routing cavity 11 on both sides of the routing cavity 11, and the first connecting pieces 22 are alternately arranged along the main feeding piece 21 on both sides of the main feeding piece 21. In this way, the mode that the first resonant cavities 12 are alternately and sequentially arranged at two sides of the main feeding member 21 not only can ensure the processing precision and the no-load Q value of the parallel resonator, but also can greatly shorten the length of the band-stop filter when the performance of the parallel resonator reaches the same level as that of the single-side arrangement, and meanwhile, the defects of high processing difficulty and poor consistency caused by bending or fold line trend of the main feeding member 21 are avoided.
In one embodiment, referring to fig. 1 and 2, the band-stop filter further includes a first input terminal 60 and an output terminal 70 disposed on the metal cavity 10. The first input terminal connector 60 is electrically connected to one end of the main power feeding member 21, the output terminal connector 70 is electrically connected to the other end of the main power feeding member 21, and the first input terminal connector 60 is used for transmitting an external signal to the main power feeding member 21.
In one embodiment, referring to fig. 1, a combiner includes the band-stop filter according to any one of the above embodiments, and a plurality of second resonant cavities 14 are further disposed on one surface of the metal cavity 10. A second resonant column 15 is arranged in the second resonant cavity 14. The second resonant cavities 14 and the second resonant pillars 15 form a band-pass filter. The second resonant tank 15 in the second resonant cavity 14 close to the signal output of the main feed 21 is coupled to the signal output of the main feed 21.
The combiner has the technical effect that the band-stop filter brings, and the beneficial effect comprises the beneficial effect of the band-stop filter. In addition, the band-pass filter formed by the plurality of second resonant cavities 14 and the plurality of second resonant columns 15 can realize the coupling transmission of narrowband signals to the main feed piece 21, so that the main feed piece 21 can realize the outward transmission of broadband signals of the band-stop filter on one hand and realize the outward transmission of narrowband signals of the band-pass filter on the other hand, namely realize the function of combining and transmitting signals of a combiner.
It should be noted that, in order to form the band-pass filter, a plurality of second resonant cavities 14 are arranged on one surface of the metal cavity 10 in a plurality of manners, for example, a plurality of second resonant cavities 14 are sequentially arranged on the metal cavity 10, and the cavity walls of two adjacent second resonant cavities 14 are provided with coupling windows 141 for energy exchange; for another example, two or more second resonant cavities 14 of the plurality of second resonant cavities 14 are arranged in parallel, a coupling window 141 communicated with the last second resonant cavity 14 is arranged on a cavity wall of one side of the second resonant cavities 14 arranged in parallel, and a coupling window 141 communicated with the next second resonant cavity 14 is arranged on a cavity wall of the other side of the second resonant cavity 14 arranged in parallel. In addition, the second resonant cavity 14 may be arranged in other ways, which will not be described herein.
In one embodiment, referring to fig. 1 and 2, the coupling feeding device 20 further includes a second connecting member 24 and a second coupling feeding plate 25. One end of the second connector 24 is connected to the main feeding member 21, and the other end of the second connector 24 is connected to the second coupling feeding plate 25. The cavity wall of the second resonant cavity 14 close to the signal output end of the main feeding element 21 is provided with an opening, the second connecting element 24 extends into the second resonant cavity 14 through the opening, and the second coupling feeding plate 25 is spaced from the second resonant column 15.
Further, referring to fig. 1 and 2, the main feeding element 21, the first connecting element 22, the first coupling feeding plate 23, the second connecting element 24 and the second coupling feeding plate 25 are integrated. Therefore, the processing and manufacturing are more convenient, no welding spot exists, and the production efficiency is higher. Further, there is no need to weld the feeding line coupled with the coupling feeding member 20 and the second resonant column 15 as conventionally, but the second connection member 24 and the second coupling feeding plate 25 are substituted for the conventional feeding line and integrally provided on the main feeding member 21, so that the production efficiency can be greatly improved.
Further, referring to fig. 1 and 2, the combiner further includes a second input terminal 80 disposed on the metal cavity 10, and the second input terminal 80 is used for transmitting an external signal to the band-pass filter.
It will be appreciated that the first input connector 60 to the output connector 70 delivers a wide bandwidth broadband signal and the second input connector 80 to the output connector 70 delivers a narrow bandwidth narrowband signal.
It is understood that the first resonant cavity 12 and the first resonant column 13 in the first resonant cavity 12 cooperate to form a structure equivalent to a parallel resonator, that is, the band-stop filter is formed with a plurality of parallel resonators corresponding to the first resonant cavity 12.
The implementation principle of the band-stop filter is as follows: when a transmission signal is input to the coupling feed 20 through the first input terminal connector 60, signal energy of a certain frequency is directly coupled to a corresponding parallel resonator through the first coupling feed plate 23, so that a transmission zero is generated in the parallel resonator. Each parallel resonator generates a transmission zero point, and a plurality of transmission zero points generated by a plurality of parallel resonators are combined to form a transmission stop band, and finally the transmission stop band is output by the output terminal connector 70, so that the function of the band-stop filter can be realized.
Further, the parallel resonators are arranged on both sides of the main feeding member 21, so that the processing precision and the no-load Q value of the size of the parallel resonators can be ensured, the length of the band-stop filter can be greatly shortened when the performance of the parallel resonators reaches the same level as that of the single-side arrangement, and the defects of high processing difficulty and poor consistency caused by bending or folding line trend of the main feeding member 21 are avoided.
The metal layer 30 is provided on the outer wall of the metal cavity 10, the cavity wall of the first resonant cavity 12, the cavity wall of the trace cavity 11, and the cavity wall of the second resonant cavity 14, for example, by electroplating, sputtering, spraying, 3D printing, or the like, and is not limited herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A band reject filter comprising:
the metal cavity is provided with a wiring cavity and a plurality of first resonant cavities arranged along the wiring cavity on one surface of the metal cavity, a notch communicated with the wiring cavity is formed in the cavity wall of each first resonant cavity, and a first resonant column is arranged in each first resonant cavity;
the coupling feed piece comprises a main feed piece, a plurality of first connecting pieces and a plurality of first coupling feed plates, wherein the first coupling feed plates are arranged in one-to-one correspondence with the first resonant cavities, the main feed piece is arranged in the wiring cavities, the main feed piece is connected with one end of the first connecting pieces, the other end of the first connecting pieces is correspondingly connected with the first coupling feed plates, the other ends of the first connecting pieces extend into the first resonant cavities through the gaps, the first coupling feed plates are arranged at intervals with the first resonant columns, and the main feed piece, the first connecting pieces and the first coupling feed plates are of an integrated structure;
the coupling feed piece is isolated from the metal cavity body through the insulating support piece, and the cover plate is covered on the metal cavity body;
the main feed piece and the first connecting piece are parallel to the bottom wall of the wiring cavity, the first coupling feed plate is perpendicular to the first connecting piece, and a coupling gap is formed between the first coupling feed plate and the side wall of the first resonant column; the main power feeding piece is provided with a mounting hole, the insulating supporting piece passes through the mounting hole and is fixedly connected with the main power feeding piece, and two ends of the insulating supporting piece are respectively abutted against the bottom wall of the wiring cavity and the cover plate; the insulating support piece comprises a first support column and a second support column, the bottom end face of the first support column is abutted against the bottom wall of the wiring cavity, an inserting column is arranged on the top end face of the first support column, a jack corresponding to the inserting column is arranged on the bottom end face of the second support column, the top end face of the second support column is abutted against the cover plate, the inserting column penetrates through the mounting hole to be inserted into the jack, and the main feed piece is clamped and fixed between the top end face of the first support column and the bottom end face of the second support column.
2. The band reject filter of claim 1, wherein the coupling feed is formed as a forged integral molding, a stamped integral molding, or a bent metal piece.
3. The band reject filter of claim 1, wherein the main feed and the first connector are both sheet-like.
4. A band reject filter according to claim 3, wherein the thicknesses of the main feed, the first connection member, and the first coupling feed plate are the same.
5. The band reject filter of claim 1, wherein the insulating support is a cylindrical support or a prismatic support.
6. The band reject filter of claim 1, wherein the insulating supports are two or more, the two or more insulating supports being spaced along the main feed.
7. The band reject filter of any one of claims 1 to 6, wherein a number of the first resonant cavities are alternately arranged on both sides of the trace cavity along the trace cavity, and a number of the first connection members are alternately arranged on both sides of the main feed member along the main feed member.
8. A combiner, comprising the band-stop filter according to any one of claims 1 to 7, wherein a plurality of second resonant cavities are further provided on one surface of the metal cavity, second resonant columns are provided in the second resonant cavities, the second resonant cavities and the second resonant columns form a band-pass filter, and the second resonant columns in the second resonant cavities close to the signal output end of the main power feeding element are mutually coupled with the signal output end of the main power feeding element.
9. The combiner of claim 8, wherein the coupling feed further comprises a second connector connected to the main feed at one end and to a second coupling feed plate at the other end; the cavity wall of the second resonant cavity close to the signal output end of the main feed piece is provided with an opening, the second connecting piece penetrates through the opening and stretches into the second resonant cavity, and the second coupling feed plate and the second resonant column are arranged at intervals.
10. The combiner of claim 9, wherein the main feed, the first connector, the first coupling feed plate, the second connector, and the second coupling feed plate are of unitary construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357202.0A CN111009709B (en) | 2019-12-25 | 2019-12-25 | Band-stop filter and combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357202.0A CN111009709B (en) | 2019-12-25 | 2019-12-25 | Band-stop filter and combiner |
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| CN111009709A CN111009709A (en) | 2020-04-14 |
| CN111009709B true CN111009709B (en) | 2024-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116325345A (en) * | 2020-12-28 | 2023-06-23 | 华为技术有限公司 | Signal transceiver, feed structure and antenna |
| CN116683139B (en) * | 2023-08-03 | 2023-10-27 | 京信通信技术(广州)有限公司 | Filter and communication device |
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| CN210956938U (en) * | 2019-12-25 | 2020-07-07 | 京信通信技术(广州)有限公司 | Band elimination filter and combiner |
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| CN207116648U (en) * | 2017-09-01 | 2018-03-16 | 武汉微嘉微电子技术有限公司 | Bandstop filter |
| CN109818121A (en) * | 2018-12-14 | 2019-05-28 | 京信通信系统（中国）有限公司 | Cavity body filter part and its cavity cover plate assembly |
| CN210956938U (en) * | 2019-12-25 | 2020-07-07 | 京信通信技术(广州)有限公司 | Band elimination filter and combiner |
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|---|---|
| CN111009709A (en) | 2020-04-14 |
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